DOCSP-29326 BACKPORT (#2984)

Author: Dave Cuthbert

source/includes/index-tutorials-considerations.rst

@@ -1,9 +1,9 @@
-Applications may encounter reduced performance during index
-builds, including limited read/write access to the collection. For
-more information on the index build process, see
-:ref:`index-operations`, including the 
+During index builds, applications may encounter reduced performance or
+limited read/write access to the collection being indexed.
+
+For more information on the index build process, see
+:ref:`index-operations`, especially the
 :ref:`index-operations-replicated-build` section.
 
-Some drivers may specify indexes, using ``NumberLong(1)`` rather than
-``1`` as the specification. This does not have any affect on the
-resulting index.
+Some drivers use ``NumberLong(1)`` instead of ``1`` to specify the index
+order. The resulting indexes are the same.